Stop-watch



(No Model.) 2 Sheets-Sheet 1.

H. A. LUGBIN.

STOP WATCH.

No. 418.577. 'Ptented Dec. 31, 1889.

ATIOR/VEYS (N0 Model.) H. A 2 Sheets-Sheet 2.

'STOP WATCH. No. 418,577. Patented Dec. 31,1889.

E I WWI /L- I I I A I C WIT/ 58858: f

INVENTOI? v i 0% ATTORNEYS N, PETERS, Fhclo-Liflwgmpher, Washington D. C.

UNITED STATES PATENT OFFICE.

HENRY A. LUGRIN, OF BROOKLYN, NEWV YORK.

STO P-WATCH.

SPECIFICATION forming part of Letters Patent No. 418,577, dated December 31, 1889.

' Application filed August 1. 1889.

To all whom it may concern.-

Be it known that I, HENRY A. LUGRIN, of Brooklyn, in the county of Kings and State of New York, a citizen of the United States, have invented certain new and useful Improvements in StopWVatches, of which the following is a specification.

This invention relates to an improved stopwatch of that class in which,besides the quarter-secon ds hand, a split-quarter-seconds hand is employed for the purpose of permitting the taking of two observations in timing races, regattas, &c.; and the invention consists of a stop-watch in which the split-quar tor-seconds hand is operated by means of mechanism located on the face of the watch above the dial, so as to dispense with the necessity of a brake-disk and brake for the split-seconds hand. For this purpose the splitquarter-seconds hand is made longer than the quarter-seconds hand and stopped either by contact with the bezel of the dial-covering glass, said bezel being provided with a roughened or knurled edge that instantly stops the split-quarter-seconds hand, or by means of an independent stop-ring operated by suitable mechanism and guided along inclines of a base-ring, on which the said stop-ring is guided by suitable pins. The split-quarter-seconds hand is made to fly after the quarter-seconds hand by means of a spring-actuated lever which is pivoted to the split-seconds hand and provided with an inclined end or shoe for engaging the heart-cam on the arbor of the quarter-seconds hand, so that as soon as the end of the split-seconds hand is released by the stop-ring the same can fly after the quarter-seconds hand and then be returned with the same to the starting-point.

The invention consists, further, of certain details of construction, which will be fully set forth hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a front elevation of a stopwatch with my improved split-quarter-seconds hand. Fig. 2 is a vertical central section of the same, showing a stop-ring for arresting the splitquarter-seconds hand. Fig. 3is a detail show ing the mechanism located on the top of the movement for operating the quarter-seconds hand and the stop-ring of the split-seconds seconds hand.

$erial No. 319,434. (No model.)

hand. Figs. 4 and 5 are respectively a top view of the split-quarter-seconds hand and a bottom view of the quarter-seconds hand, drawn on a larger scale. Fig. 6 is a side View, partly in section, showing the arrangement of the quarter-seconds hand above the split seconds and the lever and heart-cam connection of said hands. Figs. 7, S, and 9 are details of the stop-ring and its operating mechanism, and Fig. 10 is a detail vertical transverse section of a stop-watch with a modified stop device for the split-quarter-seconds hand.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the quarterseconds hand of a stop-watch of any approved construction. The quarter-seconds hand A is attached to the end of its arbor a and operated by means of the usual pawl-and-ratchct mechanism, (not shown in the drawings,) by which the starting, stopping, and returning of the quarter-seconds hand is accomplished in the usual manner. The split-quarter-seconds hand Bis applied loosely by a hollow arbor b to the arbor a of the quarter-seconds hand A, the hollow arbor being supported in suitable bearings of the movement. The splitquarter-seconds hand B, instead of being operated by a brake mechanism located on the top of the watch-movement or below the dial, is in my present invention operated by mechanism located on the face side of the movement above the dial. For this purpose the split-(1narter-seconds hand B is made longer than the quarter-seconds hand A, and thereby adapted to be engaged by a stop-ring (3, that is arranged either as an independently-movable ring on the face of the movement or made integral with the bezel of the dial-covering glass. In both cases the stopping of the split-(1narter-seconds hand B is accomplished by a roughened or knurled edge on the stop-flange d of said ring or bezel, which flange engages the outer end of the splitquarter-seconds hand, as shown clearly in Figs. 1 and 2, and thereby stops the same, while the quarter-seconds hand continues to move over the dial without the split-quarter- The split-quarter seconds hand 13 is retained in line with the quarterseconds hand A by means of the usual lever and heart-cam devices, which also serve to ICO send the split-seconds hand after the quarterseeonds hand as soon as the split-seconds hand is released. For this purpose the heartcam e is applied to the under side of the enlarged middle part of the quarter-seconds hand A next to the arbor a and engaged by the inclined end or shoe 0 at the inner end of a lever E, that is located in line with and above the shorter arm of the split-quarterseconds hand B, pivoted to the outer end of the shorter arm and acted upon by a loopshaped spring 6 that is preferably made integral with the split-quarter-seconds hand B. The free end of the spring 6 engages a projecting heel c on the eye-shaped outer end of the lever E, as shown clearly in Fig. 4.. 'When the inclined shoe 6 of the lever E presses evenly on both sides of the broad end of the heart-cam a, both hands A and B are retained in line with each other and move together over the dial, as shown in Fig. 6. \Vhen, however, the longer split-seconds hand is arrested by the stop-ring O, the quarter-seconds hand A continues its motion and causes the heart-cam to move along the shoe of the spring-actuated lever E. As soon as the splitquarter-seconds hand is released by the lifting of the stop-ring the pressure of the shoe of the lever E on the heart-cam 6 causes the split-seconds hand to fly instantly after the quarter-seeonds hand, so that the hands are again in line with and above each other.

Diiierent mechanism may be employed for stopping and releasing the split-quarter-seconds hand B. In the drawings Ihave shown two different mechanisms; but it is obvious that other constructions may be used. In Figs. 2, 3, 7, 8, and 9 the split-quarter-seconds hand B is stopped by theinwardly-bent flange (Z of a stop-rin g C,the edge of said flange being roughened or knurled, as shown in Figs. 2 and 8. This stop-ring C is provided with guide-pins f, which pass through slots f of a guide-ring G into guide-sockets f of the movement. The guide ring 0 is provided with inclined lugs f along which the stopring C can be guided by inclined notches j into raised or lowered position. The base-rin g C is guided in an annular groove of the watchmovement and adapted to shift for the length of its slots f on the guide-pins of the stopring 0. The stop-ring O and guide-ring O are held in contact with each other by means of fiat springs g, which are attached to the upper part of the stop-ring C, as shown in Figs. 2 and 9, the free ends of said springs being engaged by the cap or bezel of the watchcase. The guide-rin g G is engaged by a pin h, which is located at the outer end of a pivoted and spring-actuated lever h, that is actuated by means of a push-lever and a pawland-ratchet mechanism H, as clearly shown in Fig. 3. This operating mechanism produces the shifting of the guide-ring O in one or the opposite direction, and thereby either the raising or lowering of the stop-ring O.

lVhen it is desired to start the quarter-seconds hands, the stop-ring is raised, so as to release the outer end of the split-quarterseeonds hand, which is accomplished by pressing in the push-lever and operating by the pawl-and-ratchet mechanism II the oscillating'arm h and by the pin h the shifting guide-ring C, so that by the sliding of the inclines f along the corresponding notches f of the stop-ring the latter is raised, and thereby the split-quarter-seconds hand liberated, so that the same is free to move with the quarter-seconds hand. Both hands are then started in the usual manner and moved over the dial until the first timing observation is to be made, which is accomplished by lowering the stopring and engaging the outer end of the splitquarter-seconds hand, so as to stop the same. This is accomplished by shifting the guidering into its former normal position and returning the stop-ring along the inclined lugs of the base-rin g into its lowermost position, as shown in Fig. 2.

By making the knurled stop-flange (Z integral with the bezel of the dial-covering glass the mechanism forstopping the split-quarterseconds hand and releasing the same is considerably simplified. In this case the bezel is raised before the timing observation is to be made, so that both quarter-seconds hands can move together over the dial. As soon as the split-quarter-scconds hand is to be stopped the bezel is pressed down, so that its stopi'lange locks the split-quarter-seconds hand, as shown in Fig. 10. As soon as the bezel is opened again the split-quarter-seconds hand is released and made to fly by the action of its lever and heart-cam after the quarter-seconds hand, with which it continues its motion until both hands are stopped and returned to the starting-point by the usual pawl-andratchet mechanism. The bezel is then pressed again and locked in the usual manner.

It is obvious that the position of the relative quarter-seconds and split-quarter-seconds hands may be reversed-that is to say, the splitquarter-seconds hand may be placed above the quarter-seconds hand, instead of below the same, as shown in Fig. 10. In either arrangement, however, the fly-back mechanism by which the split-qualter-seconds hand is made to fly after the quarter-seconds hand is located between the two hands and above the dial of the watch. The liy-back mechanism is covered by the uppermost hand, with the exception of the loop-shaped spring on the end of the split-seconds hand. By arranging the stop and fly-back mechanism for the split-quarter-seconds hand on the face of the watch above the dial the brake disk and brake for the split-quarter-seconds hand may be dispensed with, and thereby the construction of stop-watches with split-quarter-seconds hands considerably simplified.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a stop-watch, the combination of the IIO quarter-seconds and split-quarter seconds hands with mechanism arranged above the dial for stopping or releasing the split-seconds hand, substantially as set forth.

2. In a stop-Watch, the combination of the quarter seconds and split-quarter seconds hands with a fly-back mechanism fol-the splitseconds hand, located between the hands above the dial, substantially as set forth.

3. In a stop-watch, the combination, with the quarter-seconds and the split-quarter-seconds hands, which latter is applied by a tubular arbor to the arbor of the quarter-seconds hand, of mechanism for stopping or releasing the split-quarter-seconds hand, said mechanism being located above the dial, and a flyback mechanism located above the dial and between the quarter and split-quarter seconds hands, substantially as set forth.

4. In a stop-Watch, the combination of the quarter-seconds hand having a heart-cam, the split-quarter-seconds hand applied to the arbor of thequarter-seconds hand, and a springactuated-lever pivoted to the split-seconds hand and provided With an inclined end or shoe, said heart-cam and spring-actuated lever being located between the hands, substantially as set fort-h.

5. In a stop-Watch, the combination of the quarter-seconds hand, the split-quarter-seconds hand, made of greater length than the quarter-seconds hand, and a stop-rin g or bezel provided with an inwardly-bent stop-flange having a grooved or knurled edge for en gaging or releasing the outer end of the splitquart-er-seconds hand, substantially as set forth.

6. In a stop-watch, the combination of the tween said hands on the face of the dial, a stopring having an inwardly-bent and knurled stop-flange, and means for raising or lowering the stop-ring, so as to release or stop the split-quarter-seconds hand, substantially as set forth.

7. In a stop-watch, the combination of the quarter-seconds hand, a split-quarter-seconds hand being longer than the quarter-seconds hand, a stop-ring having an inwardly-bent and knurled stop-flange, and means for raising or lowering the stop-ring, so as to release or stop the split-quarter-seconds hand, substantially as set forth.

8. In a stop-Watch, the combination of the quarter-seconds hand, the split-quarter-seconds hand, a stop-ring having an inwardlybent and knurled stop-flange, a shifting guidering having slots, guide-pins 011 said stop-ring exten ding through said slots into guide-sockets of the movement, inclined lugs on said base-ring engaging corresponding notches on the stop-ring, a pivoted lever having a pin for engaging the guide-ring, and a pawl-andratchet mechanism for operating said pivoted lever for shifting the base-ring, and thereby raising or lowering the stop-ring, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

HENRY A. LUGRIN. I

Witnesses:

NV. REIMHERR, JOHN ALoNZo STRALEY. 

